Bose, Somenath ; Krupanidhi, S. B. (2007) Improved ferroelectric and leakage properties in symmetric BiFeO3/SrTiO3 superlattice Applied Physics Letters, 90 (21). 212902_1-212902_3. ISSN 0003-6951
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Official URL: http://apl.aip.org/resource/1/applab/v90/i21/p2129...
Related URL: http://dx.doi.org/10.1063/1.2742322
Abstract
Symmetric BiFeO3/SrTiO3 superlattices were fabricated by pulsed laser deposition on SrTiO3 (100) substrates. Frequency independent and near saturated P-E hysteresis was observed in the case of a superlattice (periodicity of ~11 nm) as compared to leaky hysteresis observed in epitaxial BiFeO3. Room temperature leakage current density of the superlattice was almost two orders of magnitude lower than that of BiFeO3. Observed leakage current behavior in case of both BiFeO3 and superlattice indicates the dominance of space charge limited conduction. Improvement in ferroelectric property was discussed in connection to enhanced epitaxial strain, reduced leakage current, and electrostatic interaction between BiFeO3 and SrTiO3.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 18851 |
| Deposited On: | 17 Nov 2010 12:17 |
| Last Modified: | 04 Jun 2011 11:37 |
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